package com.chaodev.base.utils;

import org.apache.commons.httpclient.ConnectTimeoutException;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.*;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class HttpClientUtil {
    /**
     * 带参数的get请求
     * @param url
     * @param param
     * @return String
     */
    public static String doGet(String url, Map<String, String> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpclient = HttpClients.createDefault();

        String resultString = "";
        CloseableHttpResponse response = null;
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            if (param != null) {
                for (String key : param.keySet()) {
                    builder.addParameter(key, param.get(key));
                }
            }
            URI uri = builder.build();
            // 创建http GET请求
            HttpGet httpGet = new HttpGet(uri);
            // 执行请求
            response = httpclient.execute(httpGet);
            // 判断返回状态是否为200
            if (response.getStatusLine().getStatusCode() == 200) {
                resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (response != null) {
                    response.close();
                }
                httpclient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 不带参数的get请求
     * @param url
     * @return String
     */
    public static String doGet(String url) {
        return doGet(url, null);
    }

    /**
     * 带参数的post请求
     * @param url
     * @param param
     * @return String
     */
    public static String doPost(String url, Map<String, String> param) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        RequestConfig requestConfig = RequestConfig.custom()
                .setConnectTimeout(5000).setConnectionRequestTimeout(5000)
                .setSocketTimeout(5000).build();
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            httpPost.setConfig(requestConfig);
            // 创建参数列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, param.get(key)));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                httpPost.setEntity(entity);
            }
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (ConnectTimeoutException e) {
            resultString="请求超时";

        } catch (ClientProtocolException e) {
            resultString="请求失败";
        }catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    /**
     * 不带参数的post请求
     * @param url
     * @return String
     */
    public static String doPost(String url) {
        return doPost(url, null);
    }

    /**
     * 传送json类型的post请求
     * @param url
     * @param json
     * @return String
     */
    public static String doPostJson(String url, String json) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }

    public static String httpPut(String url,String json){

        String encode = "utf-8";
        //HttpClients.createDefault()等价于 HttpClientBuilder.create().build();
        CloseableHttpClient closeableHttpClient = HttpClients.createDefault();
        HttpPut httpput = new HttpPut(url);
        httpput.setHeader("Accept","*/*");
        httpput.setHeader("Accept-Encoding","gzip, deflate");
        httpput.setHeader("Cache-Control","no-cache");
        httpput.setHeader("Connection", "keep-alive");
        httpput.setHeader("Content-Type", "application/json;charset=UTF-8");


        //组织请求参数
        StringEntity stringEntity = new StringEntity(json, encode);
        httpput.setEntity(stringEntity);
        String content = null;
        CloseableHttpResponse  httpResponse = null;
        try {
            //响应信息
            httpResponse = closeableHttpClient.execute(httpput);
            HttpEntity entity = httpResponse.getEntity();
            content = EntityUtils.toString(entity, encode);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            try {
                httpResponse.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {
            closeableHttpClient.close();  //关闭连接、释放资源
        } catch (IOException e) {
            e.printStackTrace();
        }
        return content;
    }

    public static String httpDelete(String url){

        //HttpResponse response = new HttpResponse();

        String encode = "utf-8";

        String content = null;
        //since 4.3 不再使用 DefaultHttpClient
        CloseableHttpClient closeableHttpClient = HttpClientBuilder.create().build();
        HttpDelete httpdelete = new HttpDelete(url);
        // 5、设置header信息


        httpdelete.setHeader("Accept","*/*");
        httpdelete.setHeader("Accept-Encoding","gzip, deflate");
        httpdelete.setHeader("Cache-Control","no-cache");
        httpdelete.setHeader("Connection", "keep-alive");
        httpdelete.setHeader("Content-Type", "application/json;charset=UTF-8");
        /**业务参数*/
//        httpdelete.setHeader("test1","test1");
//        httpdelete.setHeader("test2",2);
        CloseableHttpResponse httpResponse = null;
        try {
            httpResponse = closeableHttpClient.execute(httpdelete);
            HttpEntity entity = httpResponse.getEntity();
            content = EntityUtils.toString(entity, encode);

        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            try {
                httpResponse.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {   //关闭连接、释放资源
            closeableHttpClient.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return content;
    }
}
